{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "IH significantly decreased beta - cell function , assessed both by the disposition index ( insulin secretion corrected for IH - induced insulin resistance ) and in isolated islets , in dp - BB , but not in dr - BB or WF , rats , and the effect of IH was inhibited by the antioxidant N - acetylcysteine ."}
{"Chemical": ["N - acetylcysteine"]}